Oddly enough, SF is among the best cities in America for density. I wish more of America were like Barcelona, including SF. Regulations tend to prohibit dense

Oddly enough, SF is among the best cities in America for density. I wish more of America were like Barcelona, including SF. Regulations tend to prohibit dense walkable construction though. I don't mean NIMBY protests per se. Existing city regulations tend to require more parking spaces and setbacks than old cities provided. Not to mention prohibitions on having shops and housing in the same zones that most modern cities now have. This shows that a good chunk of Manhattan couldn't be built today: http://www.nytimes.com/glogin?URI=http%3A%2F%2Fwww.nytimes.com%2Finteractive%2F2016%2F05%2F19%2Fupshot%2Fforty-percent-of-manhattans-buildings-could-not-be-built-today.html%3F_r%3D0 http://www.nytimes.com/glogin?URI=http%3A%2F%2Fwww.nytimes.c... The North American status quo is weird: it is illegal to build dense, walkable, aesthetically pleasing neighbourhoods.